Homework & Coursework Questions

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1. The problem statement, all variables and given/known data:

Write a shell script program that will input a name and a mark between 0 and 100. The program then displays the name, the mark, and a letter grade for the mark, as per the following grade cut formula.

2. Relevant commands, code, scripts, algorithms:

case/read/echo/if

3. The attempts at a solution (include all code and scripts):

I have a program that i need to get done that gets the person's name and his grade then prints it in this order "name-grade-gradeletter" so i wrote this code:

Code:

#!/bin/bash
while :; do
read -p "Enter the person's name: " name
read -p "Enter the grade of the person: " grade

case $grade in
[50-59]) echo "$name $grade F";;
[60-69]) echo "$name $grade C";;
[70-79]) echo "$name $grade B";;
[80-100]) echo "$name $grade A";;
*) echo "Wrong input"

esac
done
echo "Goodbye"

So when you input the name and the grade, it just skips to the asterisk and outputs "Wrong input". Shouldn't it go through the values since the case is $grade and is using grade that is given by the person ?

Can someone tell me my mistake ?




P.S i tried changing the case to if command to see if it works but it shows me that no such file exists ?:

Code:

if [$grade >= 50||$grade < 60]; then
echo "$name $grade F"
elif [$grade >= 60||$grade < 70]; then
echo "$name $grade C"
elif [$grade >= 70||$grade < 80]; then
echo "$name $grade B"
elif [$grade >= 80||$grade <= 100]; then
echo "$name $grade A"
else
echo "Wrong input"
fi

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):

Sheridan college, Oakville, canada, Syed tanbeer, ["https://academics.sheridancollege.ca/programs/computer-systems-technology-software-development-and-network-engineering"

Note: Without school/professor/course information, you will be banned if you post here! You must complete the entire template (not just parts of it).